Interested to Buy Any Domain ? << Click Here >> for more details...
What is the main difference between a UNION statement and a UNION ALL statement? 1. A UNION statement eliminates duplicate rows; a UNION ALL statement includes duplicate rows. 2. A UNION statement can be used to combine any number of queries; a UNION ALL statement can be used to combine a maximum of two queries. 3. A UNION statement can only combine queries that have parallel fields in the SELECT list; a UNION ALL statement can combine queries with differing SELECT list structures. 4. A UNION statement cannot be used with aggregate functions; a UNION ALL statement can be used with aggregate functions. 5. There is no difference between the two statements; they are interchangeable.
2 8779Post New Saman Bank SQL PLSQL Interview Questions
-
Saman Bank SQL PLSQL Interview Questions (1)
Where do you find info on new developments in SAP?
Is it compulsary to give TOEFL for applying US visa.
What is targetnamespace?
Explain the features are in servlet 3?
Where are local variables stored?
Is windows unix based?
How NameNode tackle Datanode failures in Hadoop?
What are the steps to send and receive JMS message ?
What is the use of manage windows control command?
Can you explain data mining?
Differentiate between deep and shallow copy?
can u explain relative path architecture framework in qtp?
Tell me how you can create a controller for subject?
What is the most abundant form of nitrogen in nature?
Define dual aspect term in accounting?
